Examine source code of GNU Linux - World

{
  "theme": {
    "images": {
      "theme_frame": "gnu-linux-top.jpg"
    },
    "colors": {
      "frame": "#706f6f",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "GNU Linux - World",
  "manifest_version": 2,
  "description": "This persona to the Lovers of GNU/Linux."
}